Agreed that one EGT in the downpipe would be easiest, but what does that buy
you?  I thought the purpose of EGT's was to enable you to monitor each
cylinder.  The cast manifold isn't the best arrangement, but if they are
placed close to the ports, they should give a pretty good indication of what's
going on with each rotor.  That seems to me to be worth the extra effort of
installing two EGT's.  BTW, the EC-2 allows you to adjust the mixture of each

rotor.  But you need to know which way to go with the mixture first.

Hi Mark;
        The EGT that I have in my turbo manifold is the one that I would use for leaning purposes if I didn't have an O2 sensor. Unfortunately it is in a location which is exposed to the combined flow of gas from both rotors, mostly due to the fact that this was the location of the hole that I had to plug from the removal of the turbo switching valve (not wastegate). It would be difficult, but not impossible to add 2 EGT's right at the exit from each rotor in the stock turbo manifold. Right now I have no reason to suspect that I have a mixture imbalance between rotors, however it would be desirable to know for sure. Add this to the long list of items to address.

        The EGT located downstream of the turbo was installed mostly for curiosity of what the temp drop trough the turbo is. And the Digitron that I was previously using to measure and display temps had 2 inputs, so why not use them?

S. Todd Bartrim
Turbo 13B
RX-9endurance
C-FSTB
http://www3.telus.net/haywire/RV-9/C-FSTB.htm

        "Imagination is more important than knowledge"
                                        -Albert Einstein